Home / 15,209.58-20,989.32-8,495.79

Finding the Fourth Proportional to 15,209.58, 20,989.32 and 8,495.79

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Solution

The fourth proportional to 15,209.58, 20,989.32 and 8,495.79 is: 11,724.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.58 : 20,989.32 = 8,495.79 : x
  2. Step 2: Convert to fraction form
    15,209.58/20,989.32 = 8,495.79/x
  3. Step 3: Cross multiply
    15,209.58x = 20,989.32 × 8,495.79
  4. Step 4: Simplify right side
    15,209.58x = 178,320,854.96
  5. Step 5: Solve for x
    x = 178,320,854.96/15,209.58
  6. Step 6: Final answer
    x = 11,724.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.